Why Swiss clients need BOI Promotion Application
Who needs it: ผู้ลงทุนอุตสาหกรรมเป้าหมาย · S-Curve / BCG · นักลงทุนต่างชาติ.
Swiss clients pursuing "Phuket trophy villas + lease-30 chalets in Chiang Mai/Pai" in Thailand typically need BOI Promotion Application before launching or buying.
Even without a special treaty, Swiss clients use the Thailand-Switzerland DTT to avoid double taxation. We obtain the Certificate of Residence for you.
What you get with NYC Legal
• ยกเว้นภาษีนิติบุคคล 3–13 ปี • ยกเว้นอากรขาเข้าเครื่องจักร • ถือครองที่ดิน 100%
Thailand ↔ Switzerland Double Tax Treaty
Thailand has a DTT with Switzerland preventing double taxation on dividends, interest, royalties, rent and capital gains.
We obtain the Certificate of Residence (R.O.21/22) translated into German / French / Italian so you can file the credit with Switzerland tax authorities.
For BOI — we handle promotion privileges and tax exemption applications end-to-end.
Documents & process for Swiss clients
Passport + visa + Work Permit (if held) + Thai Tax ID.
Source-country business or income documents from Switzerland, translated to Thai + Apostille.
Workflow: 1) Free consult in German / French / Italian 2) Document audit 3) Petition/return preparation 4) Filing & follow-up 5) Monthly/quarterly summary report.
Fees & turnaround
Starting at quoted on request · 60–120.
Swiss clients on a monthly retainer save 15–25% and receive a free Quarterly Tax Review.
Invoices issued in German / French / Italian so you can claim the deduction back home under the DTT.
FAQ
Do Swiss nationals pay Thai tax if they stay under 180 days?
No — you are not a Thai tax resident. Only Thai-sourced income (e.g. rental from a Thai condo, salary from a Thai employer) is taxable.
What does BOI Promotion Application start at?
From quoted on request + 7% VAT — fixed quote before we start.
How long does it take?
60–120 at BOI สำนักงานคณะกรรมการส่งเสริมการลงทุน once documents are complete.
How does the Thailand-Switzerland DTT actually reduce my tax?
We obtain the Certificate of Residence from the Revenue Department, then you file it with the Switzerland tax authority to credit the Thai tax already paid — up to 100% of the overlap.
Can this be done while I'm overseas?
Yes — sign a POA + courier documents via DHL. We file and return the receipts.






